Angle grinder protection structure

Abstract

The utility model provides an angle grinder protection structure, which belongs to the technical field of angle grinders and comprises a main body, a grip is rotatably arranged on the outer surface of the main body, a rotating shaft and a fixing ring are fixedly arranged at the bottom of the main body, a grinding wheel is fixedly arranged at the bottom of the rotating shaft, and the fixing ring is fixedly sleeved on the outer surface of the rotating shaft. A first protection plate is fixedly arranged on the outer surface of the fixing ring, a third protection plate is rotationally arranged on the outer surface of the fixing ring, and a second protection plate is rotationally arranged on the third protection plate; the second protection plate and the third protection plate are located in the same plane and are both higher than the first protection plate, an adjusting piece for achieving synchronous reverse rotation of the second protection plate and the third protection plate is arranged in the body, and the grip is in transmission fit with the adjusting piece. The second protection plate and the third protection plate do not need to be detached in the whole process, operation is more convenient and faster, space is saved, the detached protection plates can be prevented from being lost, and better practicability is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of angle grinder technology, and specifically relates to an angle grinder protective structure. Background Technology

[0002] Angle grinders are widely used power tools in industry and households, primarily for cutting, grinding, sanding, and polishing materials such as metal, wood, and stone. To enhance safety, angle grinders are usually fitted with protective covers. However, existing angle grinder protective covers often have a fixed protective range, limiting their ability to be expanded to meet varying usage requirements.

[0003] A patent with publication number CN221849714U provides an angle grinder with a safety protection mechanism. The grinder includes a main body, a pull pin, a positioning hole, a connecting block, a mounting groove, a telescopic spring, a protective cover, and a grinding wheel. When using the angle grinder, the operator pulls the pull pin outwards, disengaging it from the positioning hole. Then, the connecting block is removed from the mounting groove to disassemble the protective cover. After use, the operator pulls the pull pin outwards, inserting the connecting block into the mounting groove, and then releases the pull pin. The telescopic spring extends the pull pin, thus limiting the position of the protective cover and protecting the grinding wheel.

[0004] However, in order to expose the grinding wheel, the above solution requires the protective cover to be removed before each use of the angle grinder. The removed protective cover needs to be placed in the external environment, which not only wastes space but also makes it easy for the protective cover to be lost. Overall, it has certain limitations. Utility Model Content

[0005] To address the problems existing in the background art, this utility model provides a protective structure for an angle grinder.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An angle grinder protective structure includes a main body, a handle rotatably mounted on the outer surface of the main body, a rotating shaft and a retaining ring fixedly mounted on the bottom of the main body, a grinding wheel fixedly mounted on the bottom of the rotating shaft, and the retaining ring fixedly sleeved on the outer surface of the rotating shaft; a first guard plate is fixedly mounted on the outer surface of the retaining ring, and a third guard plate is rotatably mounted on the third guard plate; the second and third guard plates are located in the same plane and both are higher than the first guard plate; an adjusting component is provided inside the main body to realize the synchronous counter-rotation of the second and third guard plates, and the handle is in transmission cooperation with the adjusting component.

[0008] Furthermore, the adjusting component includes a connecting shaft, which is rotatably disposed inside the main body, and the bottom of the connecting shaft extends rotatably to the outside of the main body and is coaxially fixedly disposed with a gear; a first rack is fixedly disposed on the top of the second guard plate, and a second rack (7) is fixedly disposed on the top of the third guard plate (6); the gear is located between the first rack and the second rack, and the gear meshes with both the first rack and the second rack.

[0009] Furthermore, a groove is formed inside the main body, and a worm gear is rotatably arranged inside the groove. One end of the worm gear is fixedly connected to the handle, and the other end is rotatably connected to the inner wall of the groove. The top of the connecting shaft extends rotatably into the groove and is coaxially fixedly arranged with a worm wheel, which meshes with the worm gear for transmission.

[0010] This application has the following beneficial effects:

[0011] 1. When in use, simply rotate the handle to rotate the second and third guard plates, so that the second and third guard plates are rotated above the first guard plate, thus exposing the grinding wheel. The entire process does not require disassembling the second and third guard plates, making the operation more convenient. It not only saves space but also avoids the loss of disassembled guard plates, making it more practical.

[0012] 2. In this solution, the rotation angles of the second and third guard plates can be adjusted by rotating the handle to different degrees, thereby increasing the protection range of the guard plates according to actual needs, making the overall application range wider and further improving the practicality of the angle grinder. Attached Figure Description

[0013] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is an overall cross-sectional view of the present invention;

[0016] Figure 3 This is a partial cross-sectional view of the present invention;

[0017] Figure 4 This is a schematic diagram of the partial explosion structure of this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Main body; 2. First guard plate; 3. Handle; 4. First rack; 5. Second guard plate; 6. Third guard plate; 7. Second rack; 8. Shaft; 9. Worm gear; 10. Worm; 11. Groove; 12. Connecting shaft; 13. Gear; 14. Grinding wheel; 15. Retaining ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] like Figures 1-4 As shown, the technical solution adopted by this utility model is as follows: an angle grinder protective structure, including a main body 1, a handle 3 rotatably disposed on the outer surface of the main body 1, a rotating shaft 8 and a fixing ring 15 fixedly disposed at the bottom of the main body 1, a grinding wheel 14 fixedly disposed at the bottom of the rotating shaft 8, and the fixing ring 15 fixedly sleeved on the outer surface of the rotating shaft 8.

[0022] The outer surface of the fixing ring 15 is fixedly provided with the first guard plate 2 and rotatably provided with the third guard plate 6. The outer surface of the third guard plate 6 is rotatably provided with the second guard plate 5. The first guard plate 2 is located above the grinding wheel 14 and can protect the grinding wheel 14 below it. The second guard plate 5 and the third guard plate 6 can protect the areas that the first guard plate 2 cannot protect.

[0023] The second guard plate 5 and the third guard plate 6 are located in the same plane and both are higher than the first guard plate 2. The main body 1 is provided with an adjustment component that enables the second guard plate 5 and the third guard plate 6 to rotate synchronously in opposite directions. The handle 3 is in transmission cooperation with the adjustment component.

[0024] The adjusting component includes a connecting shaft 12, which is rotatably inserted through the main body 1. The bottom of the connecting shaft 12 extends rotatably out of the main body 1 and is coaxially fixed with a gear 13. A first rack 4 is fixedly mounted on the top of the second guard plate 5, and a second rack 7 is fixedly mounted on the top of the third guard plate 6. Both the first rack 4 and the second rack 7 are arc-shaped and coaxial with the fixing ring 15. The gear 13 is located between the first rack 4 and the second rack 7, and meshes with both the first rack 4 and the second rack 7.

[0025] A groove 11 is formed inside the main body 1, and a worm gear 10 is rotatably mounted inside the groove 11. One end of the worm gear 10 is fixedly connected to the handle 3, and the other end is rotatably connected to the inner wall of the groove 11. The top of the connecting shaft 12 extends rotatably into the groove 11 and is coaxially fixedly mounted with a worm wheel 9, which meshes with the worm gear 10 for transmission.

[0026] Working principle: When the protection range needs to be increased according to the usage requirements, rotate the handle 3. The handle 3 drives the worm wheel 9 to rotate through the worm gear 10. The worm wheel 9 drives the gear 13 to rotate through the connecting shaft 12. The gear 13 drives the second guard plate 5 and the third guard plate 6 to rotate in opposite directions through the first rack 4 and the second rack 7. This adjusts the coverage area of ​​the second guard plate 5 and the third guard plate 6 on the grinding wheel 14, increasing the protection area of ​​the second guard plate 5 and the third guard plate 6 on the grinding wheel 14. This effectively prevents the user from being cut by the high-speed rotating grinding disc, thus avoiding safety hazards.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A protective structure for an angle grinder, characterized in that, The device includes a main body (1), on which a handle (3) is rotatably mounted. A rotating shaft (8) and a fixing ring (15) are fixedly mounted at the bottom of the main body (1). A grinding wheel (14) is fixedly mounted at the bottom of the rotating shaft (8), and the fixing ring (15) is fixedly sleeved on the outer surface of the rotating shaft (8). A first guard plate (2) is fixedly mounted on the outer surface of the fixing ring (15), and a third guard plate (6) is rotatably mounted on the third guard plate (6). A second guard plate (5) is rotatably mounted on the third guard plate (6). The second guard plate (5) and the third guard plate (6) are located in the same plane and both are higher than the first guard plate (2). An adjusting component is provided inside the main body (1) to realize the synchronous reverse rotation of the second guard plate (5) and the third guard plate (6). The handle (3) is in transmission cooperation with the adjusting component.

2. The angle grinder protective structure according to claim 1, characterized in that, The adjusting component includes a connecting shaft (12), which is rotatably disposed inside the main body (1). The bottom of the connecting shaft (12) extends rotatably to the outside of the main body (1) and a gear (13) is coaxially fixedly disposed thereon. A first rack (4) is fixedly disposed on the top of the second guard plate (5), and a second rack (7) is fixedly disposed on the top of the third guard plate (6). The gear (13) is located between the first rack (4) and the second rack (7), and the gear (13) meshes with both the first rack (4) and the second rack (7).

3. The angle grinder protective structure according to claim 2, characterized in that, The main body (1) has a groove (11) inside, and a worm (10) is rotatably arranged inside the groove (11). One end of the worm (10) is fixedly connected to the handle (3), and the other end is rotatably connected to the inner wall of the groove (11). The top of the connecting shaft (12) extends rotatably to a worm wheel (9) that is fixedly arranged coaxially inside the groove (11). The worm wheel (9) meshes with the worm (10) for transmission.

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